Asphalt spreader



39,, 1934. J TRANT, JR 1,978,773

ASPHALT SPREADER Filed March 1, 1935 4 Sheets-Sheet l JZZTnanZJzRaftozwj Oct. 30, 1934. J -r JR 1,978,773

ASPHALT SPREADER Filed March 1, 1935 4' Sheets-Sheet 2 Oct. 30, 1934. IH, -r j 1,978,773

' ASPHALT SPREADER Filed March 1, 1933 4 Sheets-Sheet 5 mmm 0st. 30,1934. J. H. TRANT, JR

ASPHALT SPREADER 4 Sheets-Sheet 4 Filed March 1, 1933 Patented Oct. 30,1934 UNITED STAT ES revenue ASPHALT SPREADER John H. Trant,

J12, Norfolk, Va.

Application March 1, 1933', Serial No. 659,223

4 Claims.

This invention relates tonew and useful. im-

provements in. road surfacing machines; and particularly to machines forlaying and spreading surfacing. materials, such as asphalt.

One: object of the present invention is toprovide a machine of thischaracter by means of which" surfacing material, such as asphalt, may beproperly and eificiently comminuted, and then spread: onto the surfaceof. a road, to the'desired depth; 1

Another object is; to provide means by which the asphalt. may beproperly spread to the depth desired, and at the same time smoothed overthe surfaceof the roadtoconform with" the crown, or

18$ transverse: curvature thereof.

A further object is to provide a device of this character which includesnovel and eflicient means for working. the surfacing material. acrossthe road; and thinning out theedges thereof.

character by means. of which the above-named operations: are carried onautomatically, as the truck, which contains the; supply of surfacingmaterial; proceeds along. the road.

Other obj ects: and advantages will be apparent from the followingdescription when taken in con-- nection with the accompanying drawings.

In the drawings:

j Figure: 1. is a sideelevatiorr of the invention, shown. attached tothe rear end. of. a truck containing. the surfacing material.

Figure 2. is a top plan. view of. the distributer; Figure 3- is-aside:elevationof the distributer.

Figure 4. is a. vertical sectional view onthe line 3'5; ls-4.0151 Figure2..

Figure. 5 is a. rear elevation of the distributer. Figure. 6. is a. top.plan view ofthe smoother and levelen .Fi'gure '7 is a side elevation ofthe. smoother and leveler.

Figure 8 is an enlarged vertical sectional view on the line 8'-8 ofFigure 6.

Figure 9 is an enlarged vertical sectional view on the line 9 -9- ofFigure 6, showing the means for adjusting the leveling and scrapingblades;

Figure 10* isa. transverse sectional detail view on the: line 10-10 ofFigure 6.

Figure: 1.1 is a vertical sectional: view on the line 11=-11 of: Figure10:.

Figure 12 is an enlarged side. elevation of a portion. of the rear endof the smoother and level'er.

Figure 13 is a detail view showing the" means for accomplishing thevertical adjustment ofthe frame of the smoother and leveler.

A. further object is to-provide'a device of. this Figure 14; is anenlarged top plan view of a portion of the rear end of the smoother andleveler, showing the means for reciprocating the smoothing brushes.

Figure 15 is an enlarged rearelevation of a portion of the rear end ofthe smoother and leveler, also showing the brush reciprocating means.

Figure 16 is an enlarged vertical sectional view on the line 16-16 ofFigure 6.

Referring particularly to the accompanying drawings, 10 represents aportion of a truck, which is adapted to contain the surfacing material,such as asphalt. Connected to the. rear of the truck, by means of thelinks 11, is the spreader and. distributer, represented as a whole bythe numeral 12;. i

The distributer 12 consists of the end frames 13, eachcomprising theforwardly and rearwardly diverginglegs 14, each of which legs issupported on a ground wheel 15, carried by an end of the axle 16,supported on the lower end of said legs, and extending transversely ofsaid distributer. Transverse braces 17, connected at their opposite,ends to the end frames, serve to hold the said frames in proper spacedrelation. In the upper portion of the distributer is supported a hopper18, having the upwardly extending mouth 19, into which material isshoveled, from the truck, while the lower portion of said hopperconsists of a drum 20, extending transversely of the distributer frame.Mounted within the drum is a cylinder 21', the ends of the shaft 22, ofwhich, are journaled in the end walls of said drum. Secured to the outerface of the cylinder, and radiating therefrom, are the pins 23, whichcooperate with the rows of stationary pins 24, mounted within the drum,adjacent the lower discharge opening of the hopper. Mounted beneath thedischarge opening of the hopper, and extending transversely of thedistributer, is a downwardly and rearwardly inclined mouth 25, whichreceives the comminuted material from the hopper, and discharges thesame onto the road surface.

Connected to the rear side of the distributor is the smoother andleveler, designated, as a whole, by the numeral 26. The smoother andleveler comprises a frame consisting of the longitudinal parallel beams27, connected at their front and rear ends by the transversely extendingbracing and spacing bars 28 and 29, respectively. Extending transverselyof the intermediate portion of the frame 26, and journaled in bearings30, on the side beams 27, is' an axle 31, on each end of. which, outsideof the frame, is mounted a ground Wheel 32. Each of the said bearings isadapted to be raised and lowered by means of the adjusting screw 33,whereby to raise and lower the frame, with respect to the surface of theroad.

Extending diagonally between the side beams 27, from a point adjacentone end of the axle 31, to a point adjacent the opposite front corner ofthe frame, is a scraper blade 34, the intermediate portion of which isconnected with a horizontal plate 35.. Extending diagonally from theother front corner of the frame, to said plate 35, is a short bracingstrip 36, while a similar bracing strip 37, extends from said plate to apoint adjacent the other end of the said axle. It will be noted that therear end of the scraper blade 36 terminates a short distance from theside beam 2'7, whereby to provide an opening 36, between said blade endand the side beam, to permit the material ped by said blade, to 0 Off athe sprocket wheel 56, is a drive chain 65, by

means of which motion is transmitted from the blade end and moverearwardly therefrom. Rearwardly of the axle 31 is arranged a plate 38,similar to the plate 35, and secured to this plate are the inner ends ofthe short diagonal braces 39 and 46, extending respectively to a sidebeam 27, adjacent the outer end of the short brace 3'7, and totheopposite rear corner of the frame.

Extending from the other rear corner of the frame, diagonallyto a pointadjacent the other end of the scraper blade 36, is a scraper blade 41,-

the intermediate portion of which is connected with. said. plate 38.Extending transverselyof the frame, and having theirends connectedrespectively to the plates 35 and 38, and to the side beams 27, are thebraces 42 and 43. Inthe side beam 2'7, adjacent the outlet or rear endof the scraper blade 41, is an opening 44, through which the materialescapes, after having been scraped by said blade. Each of the scraperblades 36 and 41 is mounted in suitable guides, shown at 45,0n the sidebeams 2'7, andladjustable vertically by meansof the screws 46, wherebyto regulate.

the position of said blades with respect .to the surface of the materialon the surface of the road. Secured at their, ends to the forward endsof the side beams 27, and extending transversely of the frame 26, arethe bars 47, to each of which are secured the downwardly extendingspring raker teeth 48, for raking the surfacing material as the latter.is deposited on the surface of the road.

Mounted on the rear ends of the side beams 27, and extending 'rearwardlytherefrom, are the brackets 49. Mountedon each of thesebrackets 49, andextending in parallel relation to each other, in transverse arrangementacross the frame, are the depending guides 50. Slidable transversely ofthe frame, and supported in transverse pairs of said guides, are theheads 51 of elongated brushes 52, said brushes being adapted to engagewith, and reciprocate across the surface of the surfacing material, forthe purpose'of smoothing and leveling the same, as the machine proceedsalong the road. 7

Mounted on one of the side beams 2'7, adjacen the rear end thereof, is abearing bracket 53,

; which supports a short transverse shaft 54, hav-.

ing'a bevel gear 55, on its inner end, and a sprocket wheel-56, on itsouter end. Mounted on the rear transverse member -28, of the frame 26,is a similar bearing bracket 5'7, which supports a transverse shaft 58,arranged at right angles to the shaft54, said shaft 58 having a bevelgear 59, on its inner end, meshing with the bevel gear 55, and on itsouter end a crank arm 60. Pivotally connected with the crank arm 60 isone ,end of a link '61, the other end of which ispivotally con-- nectedwith the intermediate portion of the inner brush head 51. Mounted on theintermediate portion of the member 28 is a rearwardly extending bracket62, and pivotally connected centrally to this bracket is a rocker 63,one end of said rocker being pivotally connected with one brush head,while the other end is pivotally connected with the other brush head.Thus, as the shaft 58 is rotated by the shaft 54, the crank arm willcause the reciprocation of the inner. brush, and through the connectionof the rocker 63, between the two brushes, the other brush will bereciprocated, but in the opposite direction, and simultaneously with thereciprocations of the first brush.

On one end of the axle 31 is a sprocket wheel 64, and trained aroundthis sprocket wheel, and

ground wheels 32, to the shaft 54, for the purpose of causing thereciprocation of the brushes 52.

Mounted on the intermediate portion of the.

front member 28, of the frame 26, is a small truck 66, which has atongue 67, for attachment to the frame of hopper support. On thesides-of the front ends of the beams 27 arethe hooks 68,'to

which are connected the links 69, for connection Mounted on one side ofthe frame of the hop-' per'supportingmeans is a motor 71, the shaft ofwhich is connected with the shaft 22, of the cylinder 21, through themedium of the clutch '72, and the gear set '73.

In the operation of the invention, the parts being connected together,as shown in Figure 1, the truck 10 is driven along the portion of roadto be surfaced. As the mechanism proceeds, operatives, located in thetruck '10 shovel the surfacing material into the mouth of the hopper,and the motor '71 being set in motion, the cylinder 21 will be rotated,whereby to properly com-minute the material, as itpasses between saidcylinder and concave, or stationary pins or teeth 24, to be dischargedthrough the outlet. 25, of the hopper, and deposited on the road. Thematerial will thus be deposited in a layer which may have a face, byspreading the material, as will be readily understood. The surface ofthe loose material is then engaged and scraped by the forward scrap ingblade 36, and due to the fact that said blade is arranged diagonallyacross the frame portions of the material .Will travel along the bladeand fall rearwardly from the open end thereof, to be reengaged by therear scraping blade 41, and

caused to travel to the opposite side of the frame,

where the excess of the material is discharged to the side of the road,through the outlet open-' ing 44, in the side of the frame. As themachine proceeds further, the reciprocating brushes -52 engage thesurface of the new material, producingv the smooth and level finish tothe surfacing.

The guides 50 are vertically adjustable by means of the screws 50,carried by the, brackets 49, so as to regulate the contact of thebrushes 52, with the surfacing material.

What is claimed is:

1. A distributing and smoothing device for road surfacing materialincluding a frame, oblique bars carried by the frame and extending inopposite directions with respect to their obliquity, a scraper bladesupported on each of said bars, one of the blades having an end spacedfrom a side of the frame and in proximity to one end of the otherscraper blade, means for raising and lowering said blades on said bars,and the frame having a discharge opening at one end of said secondblade.

2. A road surfacing machine including a frame, means carried by theframe for distributing material rearwardly and transversely thereof,brushes carried by the frame and mounted for reciprocal movementtransversely thereof, means for reciprocating one of said brushes, andmeans connecting the brushes for transmitting an opposite reciprocatingmotion from said reciprocated brush to another of said brushes.

3. A road surfacing machine including a frame,

means carried by the frame for distributing material rearwardly andtransversely thereof, a ground engaging wheel connected to the frame, a

brush carried by the frame and mounted for reciprocal movementtransversely thereof, means connected with the ground-engaging wheel andthe brush for reciprocating the latter, a second brush mounted adjacentthe first-mentioned brush for reciprocal movement, and a rocker carriedby the frame and connected to the brushes for transmitting motion fromthe first mentioned brush to the second mentioned brush.

4. A road surfacing machine including a frame having an exit, obliquescrapers carried by the frame and extending in opposite directions withrespect to their obliquity, one of said scrapers being adapted to guidescrapings to the other of said scrapers, and said other of said scrapersbeing adapted to guide scrapings to said exit, brushes carried by theframe and mounted for reciprocal movement, a ground-engaging wheel onthe frame, a shaft on the frame, driving means connecting the shaft andwheel, a crank on the shaft, a pitman connecting the crank and a brushfor reciprocating the latter, and a rocker carried by the frame andconnecting the brushes whereby to transmit reciprocal motion from onebrush to another brush.

JOHN H. 'I'RAN'I', JR.

